<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<?php
    echo "hello,word".PHP_EOL;

    //输出
    $a=print "aaa";
    echo $a.PHP_EOL;

//Code language not supported or defined.

    $a=readline("请输入内容：").PHP_EOL;
    $b=readline("请输入内容").PHP_EOL;
    echo "您输入的内容是：" . ($a+$b);
?>
</body>
</html>